Questions to ask: 1) what question does this dashboard answer? 2) Is this the best way to answer the question? 3) Does everything on the dashboard add value?
4) Is there functional interactivity? 5) Are labels, titles and legends effective? 6) Does this dashboard apply visual best practice? 7) Is this dashboard right for its audience?

The visualization must be completely loaded into the working memory before publishing to Tableau Server/Online